Senior Software Developer (C#)

SRT Marine Systems plc; Cardiff; Hybrid; GBP 50,000 - 70,000; Full time

Job summary

A leading maritime technology company based in Cardiff is seeking a Senior C# Software Developer to develop robust surveillance systems, requiring strong C# and C++ skills. The role offers the opportunity to work on innovative maritime technology with flexible working options and competitive benefits.

Benefits

Matched pension contributions up to 5%

25 days annual leave (rising to 28 with service)

Private health care

Flexible working opportunities

Development and training programmes

Qualifications

• Strong proficiency in C# with experience developing robust applications.
• Background in C++ with a solid understanding of performance optimization.
• Demonstrable experience in sensor data processing or tracking systems.

Responsibilities

• Transform the PoC into a robust, scalable platform.
• Support multi-domain sensor fusion and AI-assisted anomaly detection.
• Capture evidence of incidents and collaborate with the engineering team.

Skills

C#

C++

Sensor data processing

Tracking systems

Understanding of networking protocols

Multi-threaded programming

Job description

Overview

SRT Marine Systems plc (SRT) is a market leader in international marine surveillance technology and systems. We are respected, established and an ambitious multinational company headquartered in the UK with a global customer base. Location: 1 day / week in Cardiff office. Job Type: Full-Time, Permanent. The Edge Team is responsible for developing the next-generation hardware and software platform that forms the outer layer (edge) of our wider Maritime Domain Awareness (MDA) system. This platform consolidates and analyses sensor data gathered from the maritime environment, enhancing the intelligence available to users at remote command and control centres. Our systems operate at the intersection of edge computing, sensor fusion, AI-assisted analysis, and autonomous operation, delivering real-time maritime situational awareness and actionable intelligence.

About the Role

We are seeking a Senior C# Software Developer to help port and extend an existing proof-of-concept (PoC) system written in VB.NET. The system performs vessel detection and tracking by combining (fusing) AIS and radar data sources.

What You’ll Be Doing

You’ll play a key role in transforming this PoC into a robust, scalable, production-grade edge platform—supporting multi-domain sensor fusion, AI-assisted anomaly detection, augmented reality visualization, autonomous “sentry” operations, and incident evidence capture.

What You’ll Bring

• Strong proficiency in C#, with experience developing robust, high-performance applications.
• Background in C++, with a solid understanding of memory management, concurrency, and performance optimization.
• Demonstrable experience in at least one of the following domains:
• Sensor data processing (radar, AIS, optical, or RF)
• Tracking systems or sensor fusion algorithms
• Real-time or embedded systems
• Understanding of networking protocols and data serialization (e.g., TCP/UDP, JSON, Protobuf).
• Familiarity with multi-threaded and asynchronous programming patterns.
• Ability to work effectively within an interdisciplinary engineering team.

Our Values at SRT Marine

• Ambition – Aspiring to lead in maritime domain management.
• Innovation – Driving improvement through creativity and forward-thinking.
• Quality – Committing to high standards in performance and reliability.
• Responsibility – Being individually accountable and team-driven.
• Team – Collaborating openly with colleagues, partners, and customers.

Why Join Us?

• Work on mission-critical maritime surveillance systems used worldwide.
• Be part of an ambitious, innovative, and supportive team.
• Make a direct impact on global maritime safety and sustainability.
• Enjoy flexible hybrid working.

Competitive salary and benefits, including:

• Matched pension contributions up to 5%
• 25 days annual leave (rising to 28 with service)
• Private health care
• Flexible working opportunities
• Development and training programmes

SRT Marine plc is an equal opportunity employer. We are committed to creating an inclusive environment for all employees and welcome applications from all backgrounds.